Starting or stopping device for twisting-machines.



190,789,929. PATENTE@ 9999.191995, H 9 9. W, GOLLINS STARTNG 0R STOPPNGDEVICE FR TWISTING MACHINESI APPLIOATION FILED 1929.19, 1904.

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@Mommy PATEN'I'BD MAR. 14, 1905.

H. a J. W. COLLINS. STARTING 0B. SIQPPING DEVICE FOR TWISTING MACHINES.

i APPLICATION FILED DEG.19, 1904.

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UNITED STATES Patented March 14, 1905.

PATENT OEEIcE.

HENRY COLLINS AND JOSEPH WV. COLLINS, OF PAWTUCKE'I, RHODE ISLAND.

STARTING OR S'TOPFING DEVICE FOR lTWISTINC--IVIACHINES.

SPECIFICATIONormng part of Letters Patent No. 784,923, dated March 14,1905.

Application iled December 19,1904. Serial No. 237,571. l

Be it known that we, H ENRY CoLLINs and JOSEPH W. CoLLINs, residents ofthe city of Pawtucket, in the county of Providence and State of RhodeIsland, have invented certain new and useful Improvements in Starting orStoppingDevices for 'I`wisting-\Iachines; and we do hereby declare thatthe following is a full, clear, and exact description thereof, referencebeing' had to the accompanying drawings, and to the numerals ofreference marked thereon, which form a part of this specilication.

Our invention relates to starting and stopping motion for doubling andtwisting machines, and has for its object to provide means whereby thestop-levers may be lifted out of engagement with the lever-actuating cambefore said cam is set in motion. In doubling and twisting machines ofthis character the yarn slackens up as soon as the machine stops,thereby allowing the stop-levers to fall into engagement with thelever-a ctuating cam, and should the said cam not have been previouslystopped or should it start to rotate before said levers had been liftedout of engagement therewith said levers would be thrown forward and allof the threads broken. To obvate this, we have arranged that thetwisting mechanism may be started first to produce a tension on thethreads and raise the said stoplevers out of engagement with the cambefore said cam is allowed to start, said mechanism being also arrangedto stop the rotation of said cam before the stopping of the rolls andspindles or before said levers are allowed to fall.

The invention is fully set forth in this specification and moreparticularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 illustrates an end elevation ofthe doubling and twisting mechanism, showing a portion of the startingand stopping mechanism for operating the lever-actuating cam. Fig. 2represents a portion of the frame of the machine in section. showing thescrew-actuating device for throwing the belt-shifter to start and stopthe machine. Fig. 3 is a side elevation, partly in section, showing aportion of the lower roll with the driving-gear and sliding clutch and aportion of its actuating mechanism. Fig. t shows the clutch-gear on thelower roll, the gear on the cam-shaft, and the two intermediate gears bywhich said camgear is driven from the said clutch-gear. Fig. 5 is aperspective view representing' the doubleacting' connccting-rod thatoperates the clutch mechanism from the belt-shifting rod.

Referring to the drawings, at 1 is the end frame of thetwisting-machine.

At 2 is an inverted trough or box in which rotates the cam-shaft 3. Onthis shaft is liXed the spur or cam wheel 4.

At 5 is the lower feed-roll, mounted on the shaft 6 to turn in thebearings 7 and 8. (See Fig. This roll may be driven by gears or in anyother suitable way; but for convenience it is illustrated as beingdriven from the drumshaft 9, through the belt 10, over the pulleys 11and 12. On one end of this roll-shaft 6 is loosely mounted the gear 13,which gear has the clutch-lugs 14E 14 projecting from one of its faces.At 15 is a sleeve iixed to said shaft by the set-screw 16, which sleeveextends in from the end of the shaft to the face of the said gear,serving to hold it back against the collar 17 and prevent an endwisemovement of the same. Mounted on this sleeve 15 to slide endwise in thekeyway 18 is the clutchcollar 19, which has a circular groove at 2O toreceive the yoke-pins 21 21. The yoke 22, in the upper ends of whichthese pins 21 are located, is mounted on the shaft 23 to slide endwisein the bearing 24 and carry with it said clutch-collar 19. Connected tothe. outer end of this shaft 23 is the shifting lever 25. This shiftinglever, as best illustrated in Figs. 1 and 5, has a double actionproduced by the joint 26, that divides it into two parts 25 and 27,which parts are independently pivoted at 28 and 29, respectively, theouter end of 25 being pivotall y connected at 30, through the bracket31, to the shaft 23, the opposite end of this double-acting shiftinglever being pivotally connected at 32 to the belt-shift bar L10.

1t is found desirable in this machine, in order to avoid the startingand stopping of the same inadverently to control the starting andstopping' mechanism by the action of a handoperated screw, as bestillustrated in Fig. 2, in which 34 is the handle, and the threaded screwheld to turn in the bearings 36. EX- tending outward from the lowerportion of this bearingframe is the bearing-pin 37. The nut 38 isthreadedonto the screw 35 and also has a bearing on the pin 37 toprevent the same from turning, but allowing a longitudinal motion. Thisnut extends down through the top board 39 of the machine and isconnected to the slidingl bar 4() by the rod 41. This sliding' bar 40 ispreferably made square and is arranged to move longitudinally in thebearings 42 42. To this bar at 32 is connected the end 2T of theabove-mentioned shifting lever, and on the outer end of this bar ismounted the forli 43, which engages the driving-belt 44 to throw thesame from the loose pulley 45 to the tight pulley 4G, these two pulleysbeing' mounted on the drum-shaft 9, and through which pulleys the d rum4T is rotated. One ofthe bobbinsis shown at 48.\vhich is rotated in theusual way from this drum 47 through the belt 45). The cam-shaft 3 isdriven by the gear 50 from the clutch-gear 13 on the lower-roll shaft 6,through the intermediate gears 51 and 52.

The operation of the device may be further described as follows: Inmachines of this character it is found advisable on account of the highspeed of some of the running parts, as well as for other reasons, tostart the same up slowly. This is accomplished in the present instanceby the use of the hand-operated screw mechanism, which throws thedrivingbelt gradually from the tight to the loose pulley, and Viceversa. One end of the double-acting shifting lever is connected at 32 tothe beltshifting bar 40 and its opposite end is connected to theclutch-actuating mechanism. (Illustrated in Fig. 3.) The said clutch isthereby caused to be operated in time with the rest of the mechanism tostart and stop the camshaft through the train of gears. (Illustrated inFig'. 4.) As the main driving-belt is slowly moved from the loose to thetight pulley the mechanism is gradually started up. At the same time thedouble-action shifting lever moves the clutch-collar 19 gradually towardthe face of the clutch-gear; but it is not until the machine is fullystarted and the slack of the threads taken up by the twisting-spindle toraise the stop-levers 52 out of engagement with the cam 4 that theclutch-lugs 14 14 in the collar engage those in the face of the gear tostart the cam to revolve. In stopping the machine the reverse actiontakes place.

As soon as the screw-actuated belt-shifting bar commences to move in theopposite direction to throw the belt from the tight to the loose pulleythe clutch on the collar is withdrawn from the clutch-gear at thebeginning of the stroke and the rotation of said cam ceases, while theaction of the rest of the machinery continues until the driving-belt hasbeen completely withdrawn from the tight pulley.

This machine is very practical in its con struction and effective inoperation.

Having' thus described our invention, what we claim as new, and desireto secure by Letters Patent, is

l. In a device for stopping and starting twisting-machines, stop-levers,a stop-lever'- aetuating' cam and means whereby said levers will beautomatically raised out of engagement with said cam before said cam isstarted to rotate.

2. In a device for stopping and starting twisting-machines, stop-levers,a stop-leveractuating cam, means whereby said'levers will beautomatically raised out of engagement with said cam before said cam isstarted to rotate, and means whereby the cam is caused to cease rotatingbefore said levers are allowed to fall into engagement withthe same whenit is desired to stop the machine.

3. In a device for stopping and starting twisting-machines, stop-levers,a stop-leveractuating cam and means whereby said cam is startedautomatically to rotate after said levers have been raised out ofengagement therewith.

4. In a device for stopping and starting twisting-machines, stop-levers,a stop-leveractuating cam, and means including a clutch andclutch-actuating' mechanism whereby said cam is started automatically torotate after said levers have been raised out of engagement therewith.

5. In a device for stopping and starting twisting-machines, stop-levers,a stop-leveractuating cam, a lower roll and lower-roll shaft, meansmounted on said roll-shaft and detachable therefrom, said means beingconnected to transmit a rotary motion to said cam, and means forconnecting said rotary transmtiting means to said roll-shaft after saidroll-shaft has been started.

6. In a device for stopping' and starting twisting-machines,stop-levers, a stop-leveractuating cam, a lower roll and lower-rollshaft, means mounted on said roll-shaft and detachable therefrom, saidmeans being connected to transmit a rotary motion to said cam, and meansincluding a clutch for connecting said rotary transmitting' means tosaid rollshaft after said roll-shaft has been started.

7. In a device for stopping and starting twisting-machines, stop-levers,a stop-leveractuating cam, a lower roll and lower-roll shaft, aclutch-gear mounted on said roll-shaft through which gear a rotarymotion is transmitted to said cam, a clutch-collar also mounted on saidshaft and means operated by the movement of the belt-shipper to throwsaid cl utch-eollar into engagement with said clutchgear causing thesame to rotate the said cam TOO ITO

after the spindles have been started to tighten the threads and raisesaid stop-levers from said cam. i

8. In a device for stopping and starting twisting-machines, stop-levers`a stop-leveraotuating cam, a lower roll and lower-roll shaft, aclutch-gear mounted on said roll-shaft through which gear a rotarymotion is transmitted to said Cam.l alelutoh-oollar also mounted on saidshaft, and means including a double acting shifting leveroperated by themovement of the belt-shipper to throw said clutcheollar into engagementWith said clutch-gear causing the same to rotate the said cam after thespindles have been started to tighten the 15 threads and raise saidstop-levers from said earn.

In testimony whereof We have hereunto set our hands this 17 th day ofDecember, A. D. 1904.

HENRY COLLINS. JOSEPH I/V. COLLINS.

In presence of HOWARD E. BARLoW, ESTHER I. OGDEN.

